private async Task <List <ICoin> > FilterCoins(List <ICoin> coins)
{
var unspentOutputs = await _spentOutputRepository.GetUnspentOutputs(coins.Select(o => new Output(o.Outpoint)));
var unspentSet = new HashSet <OutPoint>(unspentOutputs.Select(x => new OutPoint(uint256.Parse(x.TransactionHash), x.N)));
return(coins.Where(o => unspentSet.Contains(o.Outpoint)).ToList());
}
// Not tested after NBitcoin version upgarde
public async Task <IEnumerable <ICoin> > GetUnspentOutputs(string walletAddress, int confirmationsCount = 0)
{
var outputResponse = await _qBitNinjaApiCaller.GetAddressBalance(walletAddress);
var coins = outputResponse.Operations
.Where(x => x.Confirmations >= Math.Max(1, confirmationsCount))
.SelectMany(o => o.ReceivedCoins).ToList();
//get unique saved coins
if (confirmationsCount == 0)
{
var internalSavedOutputs = (await _broadcastedOutputRepository.GetOutputs(walletAddress))
.Where(o => !coins.Any(c => c.Outpoint.Hash.ToString() == o.TransactionHash && c.Outpoint.N == o.N));
coins.AddRange(internalSavedOutputs.Select(o =>
{
var coin = new Coin(new OutPoint(uint256.Parse(o.TransactionHash), o.N),
new TxOut(new Money(o.Amount, MoneyUnit.Satoshi), o.ScriptPubKey.ToScript()));
if (o.AssetId != null)
{
return
((ICoin)
coin.ToColoredCoin(new BitcoinAssetId(o.AssetId, _connectionParams.Network).AssetId,
(ulong)o.Quantity));
}
return(coin);
}));
}
var unspentOutputs = await _spentOutputRepository.GetUnspentOutputs(coins.Select(o => new Output(o.Outpoint)));
coins = coins.Where(o => unspentOutputs.Any(un => un.N == o.Outpoint.N && un.TransactionHash == o.Outpoint.Hash.ToString())).ToList();
var address = BitcoinAddress.Create(walletAddress);
if (address is BitcoinPubKeyAddress)
{
return(coins);
}
if (address is BitcoinScriptAddress)
{
var redeem = await _walletAddressRepository.GetRedeemScript(walletAddress);
return(coins.OfType <Coin>().Select(x => new ScriptCoin(x, new Script(redeem)))
.Concat(
coins.OfType <ColoredCoin>().Select(x => new ScriptCoin(x, new Script(redeem)).ToColoredCoin(x.Amount))
.Cast <ICoin>()));
}
throw new NotImplementedException();
}
private async Task <List <ICoin> > FilterCoins(List <ICoin> coins, bool useInternalSpentOutputs, IPerformanceMonitor monitor)
{
monitor?.Step("Get unspent outputs");
var unspentOutputs = await _spentOutputRepository.GetUnspentOutputs(coins.Select(o => new Output(o.Outpoint)));
var unspentSet = new HashSet <OutPoint>(unspentOutputs.Select(x => new OutPoint(uint256.Parse(x.TransactionHash), x.N)));
if (useInternalSpentOutputs)
{
monitor?.Step("Get internal spent outputs");
var internalSpentOuputs =
new HashSet <OutPoint>(
(await _internalSpentOutputRepository.GetInternalSpentOutputs()).Select(x => new OutPoint(uint256.Parse(x.TransactionHash), x.N)));
unspentSet.ExceptWith(internalSpentOuputs);
}
monitor?.Step("Filter ouputs");
return(coins.Where(o => unspentSet.Contains(o.Outpoint)).ToList());
}